Adsorption of Pb(II) from aqueous solution to MX-80 bentonite: Effect of pH, ionic strength, foreign ions and temperature
作者： D XU
DOI: 10.1016/J.CLAY.2007.09.004
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摘要: Abstract The adsorption of Pb(II) from aqueous solution to MX-80 bentonite was studied using batch technique under ambient conditions. Removal percent (%) and distribution coefficient (Kd) were determined as a function shaking time, pH, ionic strength temperature. results showed that the behavior on strongly dependent pH strength. presence complementary cations depressed in order Li+ ≈ Na+ > K+ at 2–5. isotherms simulated by Langmuir, Freundlich, Dubinin–Radushkevich (D–R) models very well. thermodynamic parameters (ΔH0, ΔS0, ΔG0) for three different temperatures 291 K, 308 K 328 K. reaction exothermic process favored low suggest is suitable sorbent material recovery solution.
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